/usr/lib/clang/3.5/include is in libclang-common-3.5-dev 1:3.5~svn201651-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/clang/3.5/../../llvm-3.5/lib/clang/3.5/include
/usr/lib/clang/3.5/../../llvm-3.5/lib/clang/3.5/include